'Under The Dome' Season 2 Spoilers: Watch 3 Sneak Peek Videos From Episode 6; Will Chester's Mill Be Able To Survive The 'Deadliest Storm' Yet?

“Under the Dome” will be back with more dome-drama when the CBS series airs episode 6, “In the Dark,” Monday, Aug. 4, at 10 p.m. EDT. Lucky for fans, we’ve got a few sneak peek videos to help viewers get their pulses racing for the eerie new episode.

The extended promo for “Under the Dome” teases the dome’s newest threat in episode 6: dust. Yep, “In the Dark” will feature a good old-fashioned dust bowl. But instead of solely disrupting agriculture, the blowing dirt could potentially kill residents of Chester’s Mill by suffocating them.

“If the dome walls get clogged no airs gonna be able to get in,” Rebecca informs Big Jim and Julia of the “deadliest storm” to hit the town yet.

Sneak Peek #1:

Could sneak peek #1 tease there’s a way out of the dust-covered dome? The camera follows Junior, Sam and Barbie during the exploration of a tunnel leading from Melanie’s locker.

“Lyle had to bust out the back of the locker to get down here,” Junior said to Sam while searching the tunnel, still convinced it was his mother’s ex-boyfriend who had killed Angie.

Junior is set on seeking vengeance but Sam reveals killing someone is no “small thing.” But Sam quickly covers his tracks saying that’s just what he assumes when Junior questions if he’s ever taken a life. What do you think Junior will do when he learns his uncle is the one who killed Angie?

A white Fiat van rammed into pedestrians outside enjoying a late afternoon stroll on Las Ramblas in Barcelona on Thursday killing at least 13 people and leaving hundreds injured. The Islamic State group claimed responsibility for the attack.